Part1:口算
8.76×0.5= 5÷2.5= 4.75-0.98= 0.54+3.27= 7.47+2.86= 37.35+6.97= 3.6×5.9= 8.4÷12= 10.3-8.7= 3.4+5.9=
Part2:脱式计算
0.32×99+25×0.07 8.76×4.5-15.7×0.14
（13.6-4.17）÷2.5 15.32×4+4.68÷0.25
Part3:解方程
4×4.5-3χ＝6.36 5.1χ-3.5χ＝0.8
χ÷12.5＝8 8χ＝4
Part1:口算
0.68+3.75＝ 21.5+6.8＝ 0.6×69.3＝ 310÷50＝ 22.7-6.58＝
Part2:脱式计算
（58.4+15.6）×2.3 168-3.76×20+7.38
0.8×[（5-0.68）÷1.2] 2.5×3.2×12.5
Part3:解方程
χ÷1.36＝5.4 0.75χ＝3
0.5χ-0.2χ＝15 6÷30＝χ÷0.5
Part1:口算
169÷13＝ 10.3-1.42＝ 90×2.14＝ 3.57+4.64＝ 156÷40＝
8×6.34＝ 1.57+7.46＝ 10.8-5.13＝ 135÷30＝ 4.96+2.25＝
Part2:脱式计算
3.9+（10-0.6）÷8 9.56×
4.25+0.25×4.4
0.27×1.9-0.83 48×2.7-1.8×15
Part3:解方程
1.25-3χ＝0.5 1.4÷4χ3.5÷χ
（χ-0.4χ）÷1.4＝3.3 4χ-0.4＝8.4
Part1:口算
+ ＝ - ＝ + ＝ + ＝ - ＝
+ = + = + = - = + = Part2:脱式计算
2 1 3
2 3
1 4
1 3
1 6
1 4
1 8 5 3
2 5
1 12
5 12 7 6
1 8
5 7
3 4
3 6
5 7
2 5
2 8
5
+ + + -（ + ）
Part3:解方程
χ+ = χ- =
χ- =1 χ- =
Part1:口算
- = 1- - = + -2= + = + - =
- = - = - = + = + =
Part2:脱式计算
+ + = + - 20 17 12
5 5 4 2 1 9 2 5 4 9 2 5 1 20 7 12
5 7
3 4
3 12
5 8
3 6
5 10
1 20
1 5 1 3 1 3 7 5
2 10 1 4 1 4 2 5
1
5
1 2
1 4
1 5
1 15 13 5
2 7 9 6
1 5
3 3
2 5 4 2 1
3 1 2 1 3 1 4
1
+ - 2- -
Part3:解方程
χ+ χ=28 χ=45
χ- = +χ=
Part1:口算
- = + = + = - = - =
- = + = + = - = - = Part2:脱式计算
+( - ) - + 5 4 12
1 2 1
7
5 6 5 8
5 12 5 15
13 5 2 5 2 10
3 5 4
6 1
2 1
6
5 8
3 5
4 3
2 7
3 8
3 8
1 12
5 4
1
12
1 2
1 9
4 8
7 6
1 9
5 7
4 5
2 15
2 6
5 7 3 8 3 12
5 3 1 8 5
-( - ) -( + )
Part3:解方程
2χ- = χ+ =
-χ= χ-( - )=
Part1:口算
× = ÷ = ÷ = ×30 = + =
10.8÷0.9= 1.5×0.25= 0.5×3.2= × ×14= 9-2÷8=
Part2:脱式计算
（ + + ）×72 （ - ÷ ）×
10
3 12 7 9 8 9 2 4
1 2 1 12 11 6
5 6
1 3
1 7
6 12
7 4 1 24 5 16 7 24
7 4
3 6
5 6
5 5
3 6
1 5
3 6
1 15
2 7
3 3
1 1
2 5 9 1 8
3 5
4 41 8 7 19
5
Part3:解方程
χ- χ= 2.5χ+3.6=9.6
1 -3χ= 1 ÷4=3.5÷χ
Part1:口算
2.8÷0.25= 2.75+1 = 3 +10.2= 0.125×8= 6.3÷0.07=
1-0.1= - = ÷ = - = 7.5× = Part2:脱式计算
9 ×4.25+4 × × + ÷5
48×( + + ) ( + )
×6+ 4
1 12
7 5 2
6 1 15 14 4
1 2
1 5
2 4
1 5
4 5
1 5
3 7
6 5
4 4
3 3
2
6
5 4
1 6
1 5
4 7
6 5
1 6
5 6
3 12
7 6
3 13
7
